New York attorney record · Judicial Dept 3
Timothy Sean O'Brien
John Marshall Law School alumna, admitted to the New York bar in 2006, registered office in Oak Park, IL. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2006
- Admitted
- 20
- Years in bar
- 4434601
- NY reg #
The record in one line
Timothy Sean O'Brien appears in the New York attorney register with a current status of "Due to reregister within 30 days of birthday", on record since 2006 - an administrative designation rather than discipline, but confirm current standing with the state bar.
- 20 yrs
- since first admission to the bar
- Pending-renewal
- current bar status: "Due to reregister within 30 days of birthday"
- #4 of 7
- by tenure in Oak Park office peers
- Law school
- John Marshall Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
Timothy Sean O'Brien is registered as bar number 4434601 with the New York bar authority, carrying a current status of "Due to reregister within 30 days of birthday", a routine periodic-renewal reminder, not discipline. Registration is recorded within Judicial Department 3, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under O Brien Estate Law, LLC, located in Oak Park, IL, ZIP 60301. Educational background: JOHN MARSHALL LAW SCHOOL (99 registered alumni).
State context & due diligence
A "Due to reregister within 30 days of birthday" status falls outside the New York bar's active cohort for now. The breakdown below shows what share of the register that represents.
Tenure among Oak Park, IL office peers
In the small Oak Park, IL cohort (7 with admission years), Timothy Sean O'Brien ranks #4 by tenure. See the Oak Park attorney directory .
- Local rank
- #4
- City cohort
- 7
- Local percentile
- 43rd
- Admitted
- 2006
Nearest tenure peers in Oak Park
- Emily N. Masalski admitted 2006 · 20 yr
- Yolanda Teresa Scannicchio admitted 2009 · 17 yr
- Christopher Louis Lufrano admitted 2011 · 15 yr
- Krystal Latrise Jenkins Hagler admitted 2015 · 11 yr
How local rank is computed
Rank uses years since NY-bar admission among non-deceased registry rows that list the same office city and state, a local placement, not a statewide claim. Source: NY Office of Court Administration Attorney Registration · as of August 2026. Derived local rank, not published upstream.
How Timothy compares to fellow John Marshall Law School alumni
Among the 78 John Marshall Law School graduates in the New York register, Timothy Sean O'Brien is longer-tenured than 33%.
20 years vs. John Marshall Law School alumni
Years since admission - 78 NY-registered alumni of this school
20 Top 67% higher than 33% of 78 fellow alumni
Each bar is a band; taller bars hold more fellow alumni. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · August 2026
John Marshall Law School's active-bar rate
Of John Marshall Law School's 99 alumni in the New York register, 59.6% currently hold "Currently registered" status, below the statewide average.
The 2006 admission class today
Of the 8,638 attorneys admitted to the New York bar in 2006, 66.6% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Due to reregister within 30 days of birthday
- Registration Number
- 4434601
- Year Admitted
- 2006 (20 yrs · senior)
- Judicial Department
- 3
- Next Registration
- Aug 2026
Location & Contact
- Company
- O Brien Estate Law, LLC
- City
- Oak Park, IL
- ZIP Code
- 60301
- Phone
- (312) 813-9202
Education
Status Distribution Across the New York Bar
Timothy Sean O'Brien's current status, "Due to reregister within 30 days of birthday", places this record outside the 67.2% of the 432,625-attorney New York register currently marked active.
Full statewide breakdown & source note
Source: NY Office of Court Administration, Attorney Registrations. Status counts reflect the latest reporting cycle. Bar status confirms registration only; it does not imply competence, specialty fit, or freedom from complaints.
Near-tenure John Marshall Law School alumni
Fellow alumni on the NY register whose admission year is closest to 2006 (excluding same-firm colleagues above).
Same admission year (2006), other cities
NY-registered attorneys admitted in 2006 whose listed office city differs from Oak Park, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Out-of-state NY bar peers for Timothy Sean O'Brien with the closest admission year to 2006. Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
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Timothy Sean O'Brien is currently listed as "Due to reregister within 30 days of birthday", treat that as a registration fact to confirm, not a verdict on quality.
Frequently Asked Questions
Where is Timothy O'Brien licensed?
Timothy O'Brien is licensed to practice law in New York.
When was Timothy Sean O'Brien admitted to the bar?
Timothy Sean O'Brien was admitted to the bar in 2006.
Where did Timothy Sean O'Brien go to law school?
Timothy Sean O'Brien attended JOHN MARSHALL LAW SCHOOL.
What company does Timothy Sean O'Brien work for?
Timothy Sean O'Brien is associated with O Brien Estate Law, LLC in Oak Park, IL.
Is Timothy Sean O'Brien in good standing?
Not currently, Timothy Sean O'Brien's listed status is "Due to reregister within 30 days of birthday", not active standing. Confirm current status with the state bar.
Cite this page & disclosure
Sourced from the NY Office of Court Administration, informational only, not legal advice. Full disclosure.
Read our methodology - how this data is sourced, computed, and verified.